A、To centralize all the audio signals and the frequencies of the communication systems.
B、To act as an interface between the users and the various radio communication and radio navigation systems.
C、To receive audio signals only.
答案：B
A、To centralize all the audio signals and the frequencies of the communication systems.
B、To act as an interface between the users and the various radio communication and radio navigation systems.
C、To receive audio signals only.
答案：B
A. A locking pin on the sliding window frame
B. The sliding window operating handle
C. None
A. Within five minutes of NAV mode selection when present position has bot been entered.
B. During the alignement phase in case of IRS alignment error.
C. When alignment has been completed.
A. Air (vent), water, hydraulic and fuel.
B. Water and fuel.
C. Hydraulic and fuel.
A. To produce independent pneumatic and hydraulic power.
B. To produce independent pneumatic and electrical power.
C. To produce independent electrical and hydraulic power.
A. By the HP rotor.
B. By the LP rotor.
C. By the HP rotor via the transfer gearbox.
A. An unknow terrain is being overflown.
B. Terrain is between 1000ft and 2000ft above A/C altitude.
C. There is no close terrain.
A. On the ECAM upper display.
B. On the ECAM lower display.
C. On the both ECAM displays.
A. It alerts the crew that the MCDU has failed.
B. A system, linked to the MCDU, requeats the display.
C. It alerts the crew that the MCDU MENU page is not available.
A. On the upper sidewall panels.
B. On the ceiling panels.
C. On the lower sidewall panels.
A. A warning is triggered :too much fuel.
B. All the refuelling operations are stopped.
C. The corresponding REFUEL Valve coloses.
